iMx25-nand flash change

We are using Micron MT29F2G08ABAEAWP Nand flash in place of the original Samsung K9LAG08U0M-PCB0. When I tried with ATK tool V1.71 to load the Uboot, uImage, rootfs.jffs2 files on to the new flash with 3 stack configuration of PDK, I am facing error when I try to erase the flash. The error message is attached. I don't know, is there any specific procedure / setting to be maintained for changing the flash. Kindly help me resolving this issue and loading the images to the new flash.

You need to add support for Your Flash in ATK. To do that you have to request the source code from freescale, and to change the NAND driver (device_program/flash/nand_flash) by adding the new Chip in nand_device_info.c.